New in box Dual Voltage 110V/220V Battery Charger car Jump Starter, Trickle Charger, Motorcycle Battery Charger. Smart car battery charger no settings needed upon initial use, everything is automatic When the SMART-10A battery charger is connected to an AC110V or AC220V power source to charge a 6V /12V battery, the charger automatically enters the repair mode after powering on, and then enters the auto-recognition charging mode after 5 minutes of repair. The purpose of the repair mode is to activate the battery that has a power loss or a battery that does not have a power loss to be able to resume normal charging. Dimensions: 7.09"D x 3.15"W x 2.19"H